diff options
Diffstat (limited to 'plugins/quickhighlight/gedit-quick-highlight-plugin.c')
| -rw-r--r-- | plugins/quickhighlight/gedit-quick-highlight-plugin.c | 483 |
1 files changed, 483 insertions, 0 deletions
diff --git a/plugins/quickhighlight/gedit-quick-highlight-plugin.c b/plugins/quickhighlight/gedit-quick-highlight-plugin.c new file mode 100644 index 0000000..7b4289d --- /dev/null +++ b/plugins/quickhighlight/gedit-quick-highlight-plugin.c @@ -0,0 +1,483 @@ +/* + * gedit-quick-highlight-plugin.c + * + * Copyright (C) 2018 Martin Blanchard + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2, or (at your option) + * any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, see <http://www.gnu.org/licenses/>. + * + */ + +#include "config.h" + +#include <glib/gi18n.h> + +#include <gedit/gedit-debug.h> +#include <gedit/gedit-document.h> +#include <gedit/gedit-view-activatable.h> +#include <gedit/gedit-view.h> + +#include "gedit-quick-highlight-plugin.h" + +struct _GeditQuickHighlightPluginPrivate +{ + GeditView *view; + + GeditDocument *buffer; + GtkTextMark *insert_mark; + + GtkSourceSearchContext *search_context; + GtkSourceStyle *style; + + gulong buffer_handler_id; + gulong mark_set_handler_id; + gulong delete_range_handler_id; + gulong style_scheme_handler_id; + + guint queued_highlight; +}; + +enum +{ + PROP_0, + PROP_VIEW +}; + +static void gedit_view_activatable_iface_init (GeditViewActivatableInterface *iface); + +G_DEFINE_DYNAMIC_TYPE_EXTENDED (GeditQuickHighlightPlugin, + gedit_quick_highlight_plugin, + PEAS_TYPE_EXTENSION_BASE, + 0, + G_IMPLEMENT_INTERFACE_DYNAMIC (GEDIT_TYPE_VIEW_ACTIVATABLE, + gedit_view_activatable_iface_init) + G_ADD_PRIVATE_DYNAMIC (GeditQuickHighlightPlugin)) + +static void gedit_quick_highlight_plugin_notify_buffer_cb (GObject *object, GParamSpec *pspec, gpointer user_data); +static void gedit_quick_highlight_plugin_mark_set_cb (GtkTextBuffer *textbuffer, GtkTextIter *location, GtkTextMark *mark, gpointer user_data); +static void gedit_quick_highlight_plugin_delete_range_cb (GtkTextBuffer *textbuffer, GtkTextIter *start, GtkTextIter *end, gpointer user_data); +static void gedit_quick_highlight_plugin_notify_style_scheme_cb (GObject *object, GParamSpec *pspec, gpointer user_data); + +static void +gedit_quick_highlight_plugin_load_style (GeditQuickHighlightPlugin *plugin) +{ + GtkSourceStyleScheme *style_scheme; + GtkSourceStyle *style = NULL; + + g_return_if_fail (GEDIT_IS_QUICK_HIGHLIGHT_PLUGIN (plugin)); + + if (plugin->priv->buffer == NULL) + { + return; + } + + gedit_debug (DEBUG_PLUGINS); + + g_clear_object (&plugin->priv->style); + + style_scheme = gtk_source_buffer_get_style_scheme (GTK_SOURCE_BUFFER (plugin->priv->buffer)); + + if (style_scheme != NULL) + { + style = gtk_source_style_scheme_get_style (style_scheme, "quick-highlight-match"); + + if (style != NULL) + { + plugin->priv->style = gtk_source_style_copy (style); + } + } +} + +static gboolean +gedit_quick_highlight_plugin_highlight_worker (gpointer user_data) +{ + GeditQuickHighlightPlugin *plugin = GEDIT_QUICK_HIGHLIGHT_PLUGIN (user_data); + GtkSourceSearchSettings *search_settings; + GtkTextIter start, end; + g_autofree gchar *text = NULL; + + g_assert (GEDIT_IS_QUICK_HIGHLIGHT_PLUGIN (plugin)); + + plugin->priv->queued_highlight = 0; + + if (!gtk_text_buffer_get_selection_bounds (GTK_TEXT_BUFFER (plugin->priv->buffer), &start, &end)) + { + g_clear_object (&plugin->priv->search_context); + return G_SOURCE_REMOVE; + } + + if (gtk_text_iter_get_line (&start) != gtk_text_iter_get_line (&end)) + { + g_clear_object (&plugin->priv->search_context); + return G_SOURCE_REMOVE; + } + + if (plugin->priv->search_context == NULL) + { + search_settings = + g_object_new (GTK_SOURCE_TYPE_SEARCH_SETTINGS, + "at-word-boundaries", FALSE, + "case-sensitive", TRUE, + "regex-enabled", FALSE, + NULL); + + plugin->priv->search_context = + g_object_new (GTK_SOURCE_TYPE_SEARCH_CONTEXT, + "buffer", plugin->priv->buffer, + "highlight", FALSE, + "match-style", plugin->priv->style, + "settings", search_settings, + NULL); + + g_object_unref (search_settings); + } + else + { + search_settings = + gtk_source_search_context_get_settings (plugin->priv->search_context); + } + + text = gtk_text_iter_get_slice (&start, &end); + + gtk_source_search_settings_set_search_text (search_settings, text); + + gtk_source_search_context_set_highlight (plugin->priv->search_context, TRUE); + + return G_SOURCE_REMOVE; +} + +static void +gedit_quick_highlight_plugin_queue_update (GeditQuickHighlightPlugin *plugin) +{ + g_return_if_fail (GEDIT_IS_QUICK_HIGHLIGHT_PLUGIN (plugin)); + + if (plugin->priv->queued_highlight != 0) + { + return; + } + + plugin->priv->queued_highlight = + gdk_threads_add_idle_full (G_PRIORITY_LOW, + gedit_quick_highlight_plugin_highlight_worker, + g_object_ref (plugin), + g_object_unref); +} + +static void +gedit_quick_highlight_plugin_notify_weak_buffer_cb (gpointer data, + GObject *where_the_object_was) +{ + GeditQuickHighlightPlugin *plugin = GEDIT_QUICK_HIGHLIGHT_PLUGIN (data); + + g_assert (GEDIT_IS_QUICK_HIGHLIGHT_PLUGIN (plugin)); + + plugin->priv->style_scheme_handler_id = 0; + plugin->priv->buffer = NULL; +} + +static void +gedit_quick_highlight_plugin_unref_weak_buffer (GeditQuickHighlightPlugin *plugin) +{ + g_return_if_fail (GEDIT_IS_QUICK_HIGHLIGHT_PLUGIN (plugin)); + + if (plugin->priv->buffer == NULL) + { + return; + } + + if (plugin->priv->delete_range_handler_id > 0) + { + g_signal_handler_disconnect (plugin->priv->buffer, + plugin->priv->delete_range_handler_id); + plugin->priv->delete_range_handler_id = 0; + } + + if (plugin->priv->mark_set_handler_id > 0) + { + g_signal_handler_disconnect (plugin->priv->buffer, + plugin->priv->mark_set_handler_id); + plugin->priv->mark_set_handler_id = 0; + } + + if (plugin->priv->style_scheme_handler_id > 0) + { + g_signal_handler_disconnect (plugin->priv->buffer, + plugin->priv->style_scheme_handler_id); + plugin->priv->style_scheme_handler_id = 0; + } + + g_object_weak_unref (G_OBJECT (plugin->priv->buffer), + gedit_quick_highlight_plugin_notify_weak_buffer_cb, + plugin); + + plugin->priv->buffer = NULL; +} + +static void +gedit_quick_highlight_plugin_set_buffer (GeditQuickHighlightPlugin *plugin, + GeditDocument *buffer) +{ + g_return_if_fail (GEDIT_IS_QUICK_HIGHLIGHT_PLUGIN (plugin)); + g_return_if_fail (GEDIT_IS_DOCUMENT (buffer)); + + if (plugin->priv->buffer == buffer) + { + return; + } + + gedit_debug (DEBUG_PLUGINS); + + gedit_quick_highlight_plugin_unref_weak_buffer (plugin); + + plugin->priv->buffer = buffer; + + if (plugin->priv->buffer != NULL) + { + g_object_weak_ref (G_OBJECT (plugin->priv->buffer), + gedit_quick_highlight_plugin_notify_weak_buffer_cb, + plugin); + + plugin->priv->style_scheme_handler_id = + g_signal_connect (plugin->priv->buffer, + "notify::style-scheme", + G_CALLBACK (gedit_quick_highlight_plugin_notify_style_scheme_cb), + plugin); + + plugin->priv->mark_set_handler_id = + g_signal_connect (plugin->priv->buffer, + "mark-set", + G_CALLBACK (gedit_quick_highlight_plugin_mark_set_cb), + plugin); + + plugin->priv->delete_range_handler_id = + g_signal_connect (plugin->priv->buffer, + "delete-range", + G_CALLBACK (gedit_quick_highlight_plugin_delete_range_cb), + plugin); + + plugin->priv->insert_mark = + gtk_text_buffer_get_insert (GTK_TEXT_BUFFER (plugin->priv->buffer)); + + gedit_quick_highlight_plugin_load_style (plugin); + + gedit_quick_highlight_plugin_queue_update (plugin); + } +} + +static void +gedit_quick_highlight_plugin_mark_set_cb (GtkTextBuffer *textbuffer, + GtkTextIter *location, + GtkTextMark *mark, + gpointer user_data) +{ + GeditQuickHighlightPlugin *plugin = GEDIT_QUICK_HIGHLIGHT_PLUGIN (user_data); + + g_assert (GEDIT_QUICK_HIGHLIGHT_PLUGIN (plugin)); + + if G_LIKELY (mark != plugin->priv->insert_mark) + { + return; + } + + gedit_quick_highlight_plugin_queue_update (plugin); +} + +static void +gedit_quick_highlight_plugin_delete_range_cb (GtkTextBuffer *textbuffer, + GtkTextIter *start, + GtkTextIter *end, + gpointer user_data) +{ + GeditQuickHighlightPlugin *plugin = GEDIT_QUICK_HIGHLIGHT_PLUGIN (user_data); + + g_assert (GEDIT_QUICK_HIGHLIGHT_PLUGIN (plugin)); + + gedit_quick_highlight_plugin_queue_update (plugin); +} + +static void +gedit_quick_highlight_plugin_notify_style_scheme_cb (GObject *object, + GParamSpec *pspec, + gpointer user_data) +{ + GeditQuickHighlightPlugin *plugin = GEDIT_QUICK_HIGHLIGHT_PLUGIN (user_data); + + g_assert (GEDIT_QUICK_HIGHLIGHT_PLUGIN (plugin)); + + gedit_quick_highlight_plugin_load_style (plugin); +} + +static void +gedit_quick_highlight_plugin_dispose (GObject *object) +{ + GeditQuickHighlightPlugin *plugin = GEDIT_QUICK_HIGHLIGHT_PLUGIN (object); + + g_clear_object (&plugin->priv->search_context); + + gedit_quick_highlight_plugin_unref_weak_buffer (plugin); + + g_clear_object (&plugin->priv->view); + + G_OBJECT_CLASS (gedit_quick_highlight_plugin_parent_class)->dispose (object); +} + +static void +gedit_quick_highlight_plugin_finalize (GObject *object) +{ + GeditQuickHighlightPlugin *plugin = GEDIT_QUICK_HIGHLIGHT_PLUGIN (object); + + g_clear_object (&plugin->priv->style); + + G_OBJECT_CLASS (gedit_quick_highlight_plugin_parent_class)->finalize (object); +} + +static void +gedit_quick_highlight_plugin_get_property (GObject *object, + guint prop_id, + GValue *value, + GParamSpec *pspec) +{ + GeditQuickHighlightPlugin *plugin = GEDIT_QUICK_HIGHLIGHT_PLUGIN (object); + + switch (prop_id) + { + case PROP_VIEW: + g_value_set_object (value, plugin->priv->view); + break; + + default: + G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); + break; + } +} + +static void +gedit_quick_highlight_plugin_set_property (GObject *object, + guint prop_id, + const GValue *value, + GParamSpec *pspec) +{ + GeditQuickHighlightPlugin *plugin = GEDIT_QUICK_HIGHLIGHT_PLUGIN (object); + + switch (prop_id) + { + case PROP_VIEW: + plugin->priv->view = GEDIT_VIEW (g_value_dup_object (value)); + break; + + default: + G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); + break; + } +} + +static void +gedit_quick_highlight_plugin_class_init (GeditQuickHighlightPluginClass *klass) +{ + GObjectClass *object_class = G_OBJECT_CLASS (klass); + + object_class->dispose = gedit_quick_highlight_plugin_dispose; + object_class->finalize = gedit_quick_highlight_plugin_finalize; + object_class->set_property = gedit_quick_highlight_plugin_set_property; + object_class->get_property = gedit_quick_highlight_plugin_get_property; + + g_object_class_override_property (object_class, PROP_VIEW, "view"); +} + +static void +gedit_quick_highlight_plugin_class_finalize (GeditQuickHighlightPluginClass *klass) +{ +} + +static void +gedit_quick_highlight_plugin_init (GeditQuickHighlightPlugin *plugin) +{ + plugin->priv = gedit_quick_highlight_plugin_get_instance_private (plugin); +} + +static void +gedit_quick_highlight_plugin_activate (GeditViewActivatable *activatable) +{ + GeditQuickHighlightPlugin *plugin; + GtkTextBuffer *buffer; + + gedit_debug (DEBUG_PLUGINS); + + plugin = GEDIT_QUICK_HIGHLIGHT_PLUGIN (activatable); + + plugin->priv->buffer_handler_id = + g_signal_connect (plugin->priv->view, + "notify::buffer", + G_CALLBACK (gedit_quick_highlight_plugin_notify_buffer_cb), + plugin); + + buffer = gtk_text_view_get_buffer (GTK_TEXT_VIEW (plugin->priv->view)); + + gedit_quick_highlight_plugin_set_buffer (plugin, GEDIT_DOCUMENT (buffer)); +} + +static void +gedit_quick_highlight_plugin_deactivate (GeditViewActivatable *activatable) +{ + GeditQuickHighlightPlugin *plugin; + + gedit_debug (DEBUG_PLUGINS); + + plugin = GEDIT_QUICK_HIGHLIGHT_PLUGIN (activatable); + + g_clear_object (&plugin->priv->style); + g_clear_object (&plugin->priv->search_context); + + gedit_quick_highlight_plugin_unref_weak_buffer (plugin); + + if (plugin->priv->view != NULL && plugin->priv->buffer_handler_id > 0) + { + g_signal_handler_disconnect (plugin->priv->view, + plugin->priv->buffer_handler_id); + plugin->priv->buffer_handler_id = 0; + } +} + +static void +gedit_quick_highlight_plugin_notify_buffer_cb (GObject *object, + GParamSpec *pspec, + gpointer user_data) +{ + GeditQuickHighlightPlugin *plugin = GEDIT_QUICK_HIGHLIGHT_PLUGIN (user_data); + GtkTextBuffer *buffer; + + g_assert (GEDIT_IS_QUICK_HIGHLIGHT_PLUGIN (plugin)); + + buffer = gtk_text_view_get_buffer (GTK_TEXT_VIEW (plugin->priv->view)); + + gedit_quick_highlight_plugin_set_buffer (plugin, GEDIT_DOCUMENT (buffer)); +} + +static void +gedit_view_activatable_iface_init (GeditViewActivatableInterface *iface) +{ + iface->activate = gedit_quick_highlight_plugin_activate; + iface->deactivate = gedit_quick_highlight_plugin_deactivate; +} + +G_MODULE_EXPORT void +peas_register_types (PeasObjectModule *module) +{ + gedit_quick_highlight_plugin_register_type (G_TYPE_MODULE (module)); + + peas_object_module_register_extension_type (module, + GEDIT_TYPE_VIEW_ACTIVATABLE, + GEDIT_TYPE_QUICK_HIGHLIGHT_PLUGIN); +} + +/* ex:set ts=8 noet: */ |